Model Comparison
GPT-5.6 Terra vs MiMo-V2.5-ProWhich is better in 2026?
GPT-5.6 Terra significantly outperforms across most benchmarks. MiMo-V2.5-Pro is 10.3x cheaper per token.
Verdict: GPT-5.6 Terra vs MiMo-V2.5-Pro — which is better?
GPT-5.6 Terra (by OpenAI) and MiMo-V2.5-Pro (by Xiaomi) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.
GPT-5.6 Terra outperforms in 3 benchmarks (GDPval-AA, GPQA, SWE-Bench Pro), while MiMo-V2.5-Pro is better at 0 benchmarks. GPT-5.6 Terra significantly outperforms across most benchmarks.
On price, MiMo-V2.5-Pro is roughly 10.3x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
GPT-5.6 Terra also accepts a larger context window (1,050,000 input tokens), making it the stronger choice for long documents and large codebases.
Choose GPT-5.6 Terra if…
- you want the strongest raw capability — it leads on 3 of 3 shared benchmarks
- you process long inputs — it offers a 1,050,000 token context window
- you want the most recent training data — it shipped Jul 2026
Choose MiMo-V2.5-Pro if…
- cost matters — it's about 10.3x cheaper per token
- you need open weights you can self-host or fine-tune
Performance Benchmarks
Comparative analysis across standard metrics
GPT-5.6 Terra outperforms in 3 benchmarks (GDPval-AA, GPQA, SWE-Bench Pro), while MiMo-V2.5-Pro is better at 0 benchmarks.
GPT-5.6 Terra significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, GPT-5.6 Terra ($2.50/1M tokens) is 5.7x more expensive than MiMo-V2.5-Pro ($0.43/1M tokens).
For output processing, GPT-5.6 Terra ($15.00/1M tokens) is 17.2x more expensive than MiMo-V2.5-Pro ($0.87/1M tokens).
In conclusion, GPT-5.6 Terra is more expensive than MiMo-V2.5-Pro.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
GPT-5.6 Terra accepts 1,050,000 input tokens compared to MiMo-V2.5-Pro's 1,048,576 tokens. MiMo-V2.5-Pro can generate longer responses up to 131,072 tokens, while GPT-5.6 Terra is limited to 128,000 tokens.
Input Capabilities
Supported data types and modalities
GPT-5.6 Terra supports multimodal inputs, whereas MiMo-V2.5-Pro does not.
GPT-5.6 Terra can handle both text and other forms of data like images, making it suitable for multimodal applications.
GPT-5.6 Terra
MiMo-V2.5-Pro
License
Usage and distribution terms
GPT-5.6 Terra is licensed under a proprietary license, while MiMo-V2.5-Pro uses MIT.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
MIT
Open weights
Release Timeline
When each model was launched
GPT-5.6 Terra was released on 2026-07-09, while MiMo-V2.5-Pro was released on 2026-04-27.
GPT-5.6 Terra is 2 months newer than MiMo-V2.5-Pro.
Jul 9, 2026
1 weeks ago
2mo newerApr 27, 2026
2 months ago
Knowledge Cutoff
When training data ends
GPT-5.6 Terra has a documented knowledge cutoff of 2026-02-16, while MiMo-V2.5-Pro's cutoff date is not specified.
We can confirm GPT-5.6 Terra's training data extends to 2026-02-16, but cannot make a direct comparison without MiMo-V2.5-Pro's cutoff date.
Feb 2026
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Provider Availability
GPT-5.6 Terra is available from OpenAI. MiMo-V2.5-Pro is available from Xiaomi, DeepInfra, Novita.
GPT-5.6 Terra
MiMo-V2.5-Pro
Outputs Comparison
Key Takeaways
Detailed Comparison
Interactive Arena
Judge for yourself.
Run your own prompts against GPT-5.6 Terra and MiMo-V2.5-Pro side-by-side, then vote on the output you prefer.
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FAQ
Common questions about GPT-5.6 Terra vs MiMo-V2.5-Pro.